Fluid control valve



April 21, 1953 L. M. PERSONS 2,635,638

FLUID CONTROL VALVE 'III/A INVENTOR L AwRENcE M. Emo/v.:

April 21, 1953 M. PERSONS 2,635,638

FLUID CONTROL VALVE Filed Dec. 29, 1947 5 Sheets-Sheet 2 INVENTORLAwnE/vcf M Femm/ f A TTORN E Y April 2l, 1953 L. M. PERSONS FLUIDCONTROL VALVE Filed Dec. 29, 1947 along the plane indicated by the line3-3 in Fig. 1, and it shows that valve in on position,

Fig. 4 is a side elevational View of the rear of the actuator shown inFig. 1, and it shows that actuator in oil position,

Fig. 5 is an end elevational view of the actuator shown in Figs. 1 and4,

Fig. 6 is a side elevational View of another gas valve and actuatingmechanism therefor which are made in accordance with the principles andteachings of the present invention, and it shows the gas valve andactuating mechanism therefor in on position,

Fig. 7 is a side elevational view of the gas valve and actuatingmechanism of Fig. 6, but it shows that valve and mechanism in the oifposition,

Fig. 8 is a plan view of the handle used in the actuating mechanism ofFigs. 6 and 7, and

Fig. 9 is a side elevational view of the cam shaft and cams for thevalve of Figs. 6 and 7.

Referring to the drawing in detail, the numeral I0 denotes a valvehousing which is provided with a threaded inlet I2 and a threaded outletI4. The housing I!) is preferably formed by casting, and the threadedinlet I2 and the threaded outlet I4 are preferably machined in thecasting. The inlet I2 can receive a threaded pipe, as for example asection of a gas line; and the threaded outlet I4 also can receive athreaded pipe. A valve seat I 6 is provided in the yvalve housing I0,and that seat is intermediate the inlet I2 and outlet I4. A movablevalve element I8 is provided; and when that valve element is spaced fromthe valve seat I6, gas can flow through the vhousing I0 from the inletI2 'tothe outlet I4. However,v when the valve element I8 engages valveseat I6, no gas can ilow through housing III.

The valve housing I8 will ordinarily be disposed between the jets of astove and the inlet pipe of that stove; and where that is the case,movement of the valve element I8 away from the valve seat I 6 willpermit gas to ilow to the jets of the stove. A thermally responsivedevice will usually be interposed in the gas line between the jets ofthe stove and the intake of the stove; and that thermally responsivedevice will control the rate of ilow. With this arrangement, thethermally responsive device can be set to provide any desiredtemperature, and the movable valve element I8 in valve housing I0 willdetermine when the gas is turned on and off.

The valve element I8 is provided with a vertically disposed stem 2U, andthat stem is integrally secured to the valve element I8. As a result,movement of the valve stem 28 will cause concomitant movement of thevalve element I 8. The valve stem 20 has a shoulder 22 thereon, and theupper edge of that shoulder receives the lower end of a helical spring24 which is tightly wound around the upper end of the valve stem 20. The

are surrounded by a movable sleeve 28 of magt' netic material. The innersurface of the sleeve 28 bears against and is guided by the face of theshoulder 22 on valve stem 2n, and the small diameter, lower portion ofsleeve 28 can bear against y the bottom of shoulder 22. The engagementbetween the small diameter lower portion of sleeve 28 and the shoulder22 of valve stem 28 enables upward movement of the sleeve 28 to cause upwardA movement of the valve stem 20. While the inner surface of sleeve28 does bear against the outer face of shoulder 22 on valve stem 20, thesleeve 28 can readily move relative to the shoulder 22; and the sleeve28 will normally move downwardly until the small diameter lower portionof that sleeve is spaced below the shoulder 22. With this arrangement, alost motion action is provided between the sleeve 28 and the valve stem20; and this lost motion action permits momentary upward movement of thesleeve 28, in response to magnetic lines of force from theelectro-magnetic core 26, before the small diameter lower portion of thesleeve 28 strikes the shoulder 22 on valve stem 28. Although thismovement is only momentary, it permits the sleeve 28 to develop somemomentum; and that momentum facilitates prompt upward movement of valvestem 20. This makes it possible to attain prompt actuation of the valvestem 2U with a small electromagnet or solenoid.

A iiange 3!! is provided on the lower end of the sleeve 28; and thatilange can bear against the upper surface of the valve element I 8, thuslimiting downward movement of the sleeve 28 relative to the valve stem20. The weight of the sleeve 28 and the nange 3Q will be carried by thevvalve element I8 and that weight will tend to hold the valve element I8in engagement with the valve seat I6. The core Ziof the electromagnet orsolenoid is provided with a gas-tight shield 32 which extends downwardlybetween the movable sleeve 28 and the iixed electromagnet or solenoidwinding 38. This gas-tight shield extends through an opening in aclosure plate 34, and the end of the shield 32 is secured to thatclosure plate in a gastight seal, as by soldering, brazing, or othermeans. The closure plate 34 rests upon a gasket 36 which in turn restsupon an opening in the top of the valve housing I Il; the gasket 3Bprovid` ing a gas-tight seal between the closure plate 34 and the valvehousing I0, and the closure plate 34, the gasf-,tight shield 32, and theelectromagnet or solenoid core 2B providing a gas-tight enclosure. Withthis construction, no. gas can escape from the upper portion of thevalve housing I0 although the valve stem 20 extendsupwardly through thatupper portion. This makes it possible to actuate the valve stem 20electrically without permitting loss of gas.

Three spaced protuberances 35 are formed on the under side of closureplate 34, and those'protuberances limit upward movement of the sleeve 28and the flange 30 attached thereto. The protuberances 35 are so spacedthat they hold the sleeve 28 in coaxial relation with the core 26, andthey provide three point, chatter-free support for the ange 38 andsleeve 28. This assures quiet operation of the valve when it is actuatedby the solenoid winding 38.

The electromagnet or solenoid coil 38 of the control device is housedwithin a casing 48 which extends upwardly from the closure plate 34.This casing has an opening 4I in one side thereof to accommodate theleads from the electromagnet or solenoid winding 38, and it has a coverplate 42. There is no need of providing and maintaining a gas-tightengagement between the leads of the winding 38 and the casing 40, nor isthere any need of providing and maintaining a gastight engagementbetween the cover 42 and the casing 48, because the casing 4D iscompletely isolated from the gas in the housing I0 by means of theclosure plate 34 and the gas-tight shield 32'.

An opening is provided in the* bottom of the valve housing I8 toaccommodatethe lowffereii-cl;v

lcates meth-:arcani 44.Y Gamrhous-ing544iis securedstofthebottom-cfthe-waive:housing; l-Ufby means; oh boltsfor: screws notshown. which;vextendsthroughiopeningsden-a@ange'attheupper end-'1'- of housing' 44: Avgasket 46 .isf positioned between-.ther flange of..v the` cam housing44: and

` bottom@olfrthel'valvezhousing lpthusgprovid-.ingea=1gas-tightlconnectiomb'etween:thecanrihous; inge 4M and theebottom of, the-:valve: housing |70.

opening; 50i-isaA prov-ided in,l oneside: off. the

.which-.fief for-medi, thema-1l. of` cam.Y housing 4.4

thatrisfeppeslteltathefopeningtilt 'Ihegcamfsha-ft ahexagonat head;v54;l and'. that head` ts intorafhexagonal, recess .ina-f crank arm:`56;V

cranktarm; 56de assembledwith. shaft"y 52. by slip?- pi-ng the. crankvarm: over. the; small. end: of: theshaft-52.,.,andzithenmcvingethe'cranlcarm 5.6;int'o en'gagcimentwith;the; head 54. of thershaft 52. Thereafter; the hexagonal recess; imthe.V crank arm.. 56 andthe hexagonalhead 54 ofthe shaft 52I arey placedin'register with-each` other and the headl-54l-isseatedin thelhexagonalfrecess. The engagement between the hexagonal: headY 54 of shaft52`andlthe hexagonal recessy oi the crank .arm\56assuresfconjointrotationof thecrank arm Sarid'lthe, camshaft -5 2'.

A pin1 iiscarred bythe Vinnerendofrthe cam 'shaftsz andrhat pin.extends: through and piro;

jects outwardly beyondtheopposite surfaces of cam-shatt52;V A sleevel 60telescopes over and isfsupper'ted4 by the shafti52; and thatsleev'e' hasaproecting'shoulder 52 which liesfin the path' of the pin '8scarried bythefcam shaft.v 52. Asa result, rotationcf the cam-shaft 5Z,\re1ativetothe sleeve 5t; wilt bring thepin 58 intoL engagement with oneor.theother: of the facesfof the shoulder 62.on; sleeve.- 601.. Both.faces-:of thef shoulder 62 arefsquared voif so` thefpinfi58` cann meetlthe shoulgder: 62fand forceitto move.witlrshaftz52'.f How ever,.the.shoulder-.W62 has a; length of; only about ninety- (.90) degrees; and`thus the cam shaft. 52 can rotate for.. about seventyv ('70.)` degreesbefore itfcauses the;sleeve-l01thl rotate. Acamzll'risinvtegrallysecured: to 1 the sleeve 65; and..y it: extends tionoft thefsleeve: t0.vmeans` that there is. ai lost motion connection between ther shaft' 52Aandthe cam'64 which is integrally secured-.to thesleeve 60a The camy64V carriesv a1 pin. 66,. and thatpin is register with and extendsintoar slot-1.0i on a camzf.A The carniY 623"is;immediatelyadjacent` thecam.54;. but-fit-is not` securedto "the carn- B'llf except through theengagementbetween pinv U56 and slot HL4 This engagement provides a lost@motion connection: between the-cam 64 andthe caml 68'. Fromithi-sit isapparent: that there. are'Y two lost motion connectionsin. theiconstructionLsh'ownlin Figsrl-S.

The upper end ofthe cam A66- isprovided with a Iat face '12.which. is,horizontal when thefcam 68" i'nlockingposition, as shownin Eiga 2; randthe upper endl of cam-.t6 is. provided. withiastop 1'4 that;isi'v'erti'cal when thecam 68: isf-inf. locking position.'rhezfuppenendiof the cam edhasfamincin'edf face` 1:6;y and. that;mclhedl faire?A extends uriwa-rdly.:vv abovef the'level of thezfatffacef12': on the up'perrendofi'cain1,68i. Y v l.

A .he-heat; spring 1.8i is; provided? withim the.r cam housings Maandthat spring-3 surrounds: the; cam shaft: 5h One: endf oli-the helicalspringt 1:8:ex1- tends;v into an; openingL in; the: cam; 68;.v andz'theotherv end off the spring.: 1;8i sjsemlred; tufthe. side waltA of. thehousing 414 asv as result, ther-HelicalSpringft8tends-toerotatethcamfGatinaaacaunten ciockwise direnti'oniinEig. 2: rotation: of cams 6.6: would; ifnotr prevented. rctateethef camsittand 64:r nfaJ counter-clockwiserdirectiomthus resilient`Wheinthelcann 58 permitted: ttt-rotate inresponsa to; tix-erectionofsprngr- 18;.thencror sIot'Hlzwiil strikeepim 6650i:` cam. 6icausing-the shoulder: 52; of;- sleeves Et: to stnikez'pi'n:Eandre'ztatefcam shait52.

'lhefopenng 50E im the side'e ori'the: cam housing; l141receires-theshaftfEjZ; andi thalfepening also: receives; packing,y 6m which'.surrounds-the.

shaft. 52;.. Thepackingr 8u. is: pressed`- intel the.

conicaltinnerz" end off. the-` opening?511:'.byfa.y spring; 82=l whichsurrounds the; shaft- 52`.. This springv pressesv against,- thepackingf811i and". also presses against thearrrrv 5B, thus/holding the packing86 inssea'lingrelatiorr with'ftheinner endor. 'opening 5D. The spring82l 'is-madezso iti's lessy powerful than the spring; 18;: thusfth'espring T8 can: hold. the: shaft: 52fA agairxstL axiaidisplace#- me-nt,despite the: force. exertedonlthefcrank arm 56-by' spring: 8.2. The:packings cooperates with the gasketl 46tomaintain?theigas-tightvintegrity ofthecam housing..44:.

Thevva'lve'. housing! tu?istprovidedwithtating; 84 that projects;outwardly from the side of the housing' lifl. That lug has. a?vertitsali'y-1 disposed opening: therethroughf,A and ithasf asetscrew 86which. is? threadablyf supported; in the sidel` thereof. Thev lug 84 isfdisposed; above: they lug-51 on the; end of crank arm'iEBj andi thehigl' 84se'rves as. a guide and support for a sheath 8l? The sheathk 38isshownaslbeing formedofa'- strip of metalV tharLisJcoiled'v to form 'asheath, andsuch a sheath is quite workable. I-Iowevefr, iti i's-I pre'-ferredi tol use a continuous metal sheath which is' formed by extruding,drawings or-f'otherwisei treatingt al piece of metal'. The sheath 88encloseslafiexibl'e cable 9U;- andthel'ower end? of that cableprojects-beyondi ther lower' endif ofthe sheath 8,8. The lower endif oficablev 90" passes through..an;openingA in the 11"g"5=1f on crank-arm5.6i,L and it; ist secured tot. that? lug-2 byf a-Yset screw 58., The.lupper end` of' 'the cable'.` SUeXteIId'soutwardly lfromrsthe, upperv endof' theisheath 88', and that end of; cable; 9D: isr'secure'd! tok anactuating mechanism for th'egas valve:A

The actuating; mechanism isy mounted on' a supporting plate 92 whichislshownto` bewif'rec`l tangular configuration; but'g. obviously; theconfiguration ofA the. platev 52 is;not-importantissime it may' be made#ofany' suitableform .or size, The particularform'v of: plate: 921, showninFi'gs; l, 4 and 5; was'selected because i'tttedi the design and`.structure of azstove with which the valve housing l0 wasy to be used".AThe valve housing |`0-was located adjacent'the-fbottom of 'the stovewhile: the supporting'plate: 92was located atthe topf of the-stove..Ther sheatli 88 Aand: the'` exib'le cable-f90. extended between.the'fvalvef'housng' I0 andl the-supporting plate: 525. lug- 94 isfprovidedionY the: plate, 52;, and theiupper end 01?:` thesheatnaeextndszmtaavenant@ disposed-tpm 'ing in'that lug. A set screw 96is threadably mounted in the lug 94, and it secures the upper end of thesheath 88 to the lug 94 by pressing against the side of sheath 88. Theplate 92 also is provided with an opening that receives the horizontallydisposed shaft 98. This shaft car- -ries a handle at its front end andit carries a crank arm .|02 at its rear end. The crankarm I02 isdisposed to the rear of the supporting plate .'92 while the handle |00is disposed in front of the supporting plate-92. The crank arm |02 isprovided with a lug |04, and that lug receives and holds the upper endof the flexible cable 90. A helical spring |06 is wound around the shaft98, and that spring normally presses against the lug |04 on the crankarm |02. A pin |08 is disposed adjacent one end of the spring I 00 andthat pin serves to limit clockwise rotation of the right hand end ofspring |06; thus making it possible for the lug |04 to move out ofcontact with the spring I 05, and also limiting the amount of rotationof arm |02 that can be caused by spring |06.

A pin I|0 is disposed adjacent the left hand end of helical spring |06,and that pin resists counterclockwise rotation of that end of thespring. A pin 2 is provided adjacent the arm |02, and that pin limitsclockwise rotation of the arm |02.

The operation of the control device of the present invention is simplebut certain. Gas entering the threaded inlet I2 of housing I0 will pressdownwardly onl the upper surface of the valve element. I8, and thatpressure will cooperate with the force exerted by spring 24 to securelyhold the valve element I8 in engagement with the valve seat I5. Duringsuch periods, gas cannot pass through the valve housing I0; and no gascan flow from the outlet I4 to the jets or burners of the stove orlother heating device. The valve element AI8 can be forced to move awayfrom the valve seat I0, and thus permit gas to ow from the outlet I4, bymanual or electrical, or manual-electrical actuation. Purely electricalactuation of the valve stem 20 can be attained by connecting the leads,not shown, of the solenoid winding 38 to a suitable source ofelectricity. Current from that source will pass through the solenoidwinding 38 and will create magnetic lines of force in the core 20. Thoselines of force will cause the sleeve 28 to move upwardly; and as thatsleeve moves upwardly its lower end will strike the shoulder 22 on thevalve stem 29 and move that stem upwardly, thus raising the valveelement I8. As long as the solenoid 38 is energized, the sleeve 28 andvalve stem 20 will be held in such position that the valve element I8 isspaced from the valve seat I 6. Dis-continuance of the flow of currentfrom the source, as by operation of a manual, time, or thermal switch,will de-energize the solenoid winding 38 and permit the spring 24 toforce valve element |8 against valve seat I 8.

Purely manual actuation of the valve stem 20 can be attained by rotatingthe handle |00 in a clockwise direction in Fig. l from 01T position toset position. This pulls the flexible cable 90 upwardly relative t0 thesheath 88; and the lower end of the cable 90 will pull the end of crankarm B upwardly and cause that arm to rotate in a clockwise direction.Shaft 52 will rotate with arm 56; and as the shaft 52 rotates, it willmove the pin 58 thereon into engagement with the shoulder 62 on sleeve60. This engagement between pin 58 and sleeve 00 will cause the cam' 84-to rotate in a clockwise direction, and such rotation ofcam 04 willcause pin 65, carvthe pin 58 will be immediately adjacent the ried bythat cam, to move to the right hand end of the slot 10 in the cam B8.Continued rotation of the shaft 52 in a clockwise direction will causethe cam 64 to move the cam 68 approximately ninety degrees; the back ofthe cam 68 gradually raising the valve stem 20 until it passes the stopI4 and then drops down against Vthe flat face 12 of cam 68. Thereafter,the stop 'I4 will extend above the lower end of valve stem 20,'thuspreventing rotation of the cam 08 ina counter-clockwise direction underthe influence 4of the helical spring 18.

Once the handle |08 has been rotated to the set position and the cam' 68and valve stem 20 thereby locked together, the handle |00 can bereleased. At such time the spring |05, which was compressed as thehandle |00 was being rotated to set position, willrotate the handle |00toward the on position. The handle |00 will rotate under the action ofspring |00 until the handle |00 is adjacent pin |08; :and thereafter thehandle |00 will-be free from pressure exerted by the spring |06 sincethe pin |08 will hold the right hand end of spring |06 against further'clockwise movement in Fig. 4. At this time the 4being moved downwardly;and such movement caused counter-clockwise rotation of shaft 5,2. Suchrotation can occur even though cam 68 is held against rotation, by theengagement between stop 'I4 and valve stem 28, because the lost motionaction of pin 58 and shoulder 62 permits about seventy 70) degrees oflost motion. When the spring |06 bears against the pin |08,

shoulder 62 of sleeve 60. To close the valve, the handle |08 can berotated 'toward the 01T position; the vcable 98 rotating the shaft v524and causing the sleeve 60 and cam 64 to rotate. The inclined face I6 ofcam 64 will then raise valve stem 20 upwardly until it is above stop 14,thus freeing cam 68. Thereupon the spring 18 will rotate cams 64 .and 68to horizontal position, thus permitting spring 24 to move valve elementI8 against the valve seat I6. The rotation of the cam 68, under theaction of spring 78, will cause exceedingly rapid rotation of the cam04; and that rotation will move the shoulder 62 on sleeve l68 againstthe pin 58 with sufficient force to rotate that shaft and pull the cable90 downwardly. This downward pull on the cable 90 is sufficient to movethe handle |00 all the way to the ori position in case it was notmanually moved all the way to that position.

ToV attain a combined manual-electrical actuation of the valve and theactuating mechanism therefor, the handle |00 is rotated to the setposition and then is permitted to move back to the on position under theiniiuence of the spring |06. The initial movement of handle |00 willcause cam 68 to raise valve stem' 20 to open valve position and thenlockit in that position. Thereafter, a time switch can be connected t0 thesolenoid 38 of the valve; and where that switch can give a momentaryimpulse, it will act at the desired time to cause the solenoid winding38 to raise and then drop the valve stem 20. Such action will lift stem20 above the stop 'I4 on cam 68, thus permitting cam BS to rotate tohorizontal position; and it will then let the valve stem 20 move downinto valve-closing position. The spring-induced inertia of the cam' 58will be sufficient to rotate shaft 52 and pull the cable 90 downwardly.Such action will move the hanva,fosso-,seis i 9. d1e1:|0-f-ffrom"onposition 'to fof position. thissway the 'handle IIIII notonlyactsasalmanipulator but lalso acts as an indicator for the controldevice.

Afmodied form Yof :gas valve and actuating f ing 311| 4. 'These `variouselements are .not :showin because they are identical i.tofltheiroorr'esponding elements in Figs 143. Aecamhous'ingIi-IB, which is1 similar to the Scam 'housing flif-ofviliigs. 'i1-3 'is seouredlto andsupported by Ethe under side --o'fy the ivalve housing fl-M. Thevalve-@housing LI Iii is supported by a `frame LI-iiii; which frameirnayY'he of anyisu'itable form .and shape, the Vform indicated Linl'thedrawing merely being one simple vbut usable-:construction mheicamhousing -I |f8 frotatablysupports a lcam shaft SL22 which ncarries alcamA:IM which v.is similar to cam''; and Ithefcam l|124 -is supported onbut is rotatable relative to the shaft |2152.v The @am 124 has la'horizontally-'disposed "iia't yface Y |261-fsimilartouthe .I'la'tffaceJ12 of Vean-iiIi-i inlFigs. 1-3; and it has Ala vvertically Adisposed=stop l'|128 Whi'chiis-similar `lto v:the-stop FM of the cam o8. Cam022|? is positionedi'adj acent .a Valve Vstern 1249, and the stopY:portion 12B of that Jcamis disposed so iitifc'an `be :moved Sinto thepath :of fthe valve stemiIZS. u'Ihus, the lstop 4|228 can .engage Ithevalvestem '|29 `and hold that :stem 1in open .position wvh-ile holdingthe .cam G24 against 4r-citation.

Atcam JI30, .which lis :similar `to cam iid of Figs.y

1-3, is;positioned adjacent cam |224. The-cani |39 diiers from vthe camMin that Sitiis 'fxedly :securedto -theicarn :shaft |122 instead .ofJoeing iconneoted to an intermediate .sleeve supported` on the shaft.The Acam 1|3.-.carries a pin |32 extends .-:into a slot "|34 formedinzthecam-Il; and-With this arrangement, the cam 4*|136 @will 10 or lafslot 'fl-46 'lin fa -fconnec'ting rod 112. The fslot|46f-is1onger1'thanfthe lverticalltr'fwe'l of pin WI so'the vrod 2| 42can loeluse'd tomaise vfarm i238 Yintoon position ibut `'cannot be iusedto Imove that Vrod 'to yoff position. Such ain-arrangement lis desirablewhere -the laci-,dating `mechanism .is to tbe setimechanicallyihutis tobe trippedfelectrically. The opening 2|. foloselyvsurrounds @pin .1M I.;and Where itt telescopesfover 'that V:pin .it :Will .enable connecting:rod |52 `to open and close :the valve.

Thisprovicies 11u11 `inanual ao'perationiof fthe vvalve, and itzcamcooperate'iwithtthe solenoidrin housing II :to `:provide 'manual opening:and Lelectr-ical closing fof the valve.

An :opening IAS provided eat 'the ntopof the connectingerod M2. and.that opening vrits soveria pin .'.lf aon ,la .f crank farm v-| 5-2.held. :in assembled relation withfthe trod .fl 42 abyfa cotter pin i|-5ithat Apassed through an `opening in the :pin A5I) land fthen -expanded.to ,prevent movemithcamshaft 1221 andmill provideaar'lost motionoonnectionbetween :cams 124 and |130 and lbetween `shaft 1|2`2and cam1|2f4. 'Suchsa lost-motiontocnnection ipermits :thelcamfshaft |22to-:rotateandimove-cams |224 and |39 lQundier the valve-:stem |29 .andpermits tripping .movement ofzcam ifgwhile-'cam `I 30 is held \bystopvF28. f As shaft |22 rotates invia fclookvvlise :diireetion thegentlymounded face yof .the :cam l|24--will first raise valve -.stem |29Aand Awill -then :let it fdrop down r`into engagement with the lati'a'ce F216 of that #ca-m. VThereafter,V cam |24 will `he iheld againstJrotation until the Y'cam shaft |22 lis rotated to cause the inclinedface I 22er cam |36 toengage valve stem |29-and raise `it out of thepath-of stop |28. Thereuponaspring,not-shown, which jis similar to *thespring 'iii of Fig. 3, will and 'the valve stem |29 4Willioe Afree to-movesthe valve velement `into engagement fWith Ythe *valve seat.

A cran'karxn `|38 is secured ldirectly to the "ca-m shaft 122, and itIis lprovided--Withshoulders adjacent uan arcuate section, 4whichYshoulders cooperate with a Vpin r|40 to -limit rotation of thecrankzarm ISS-andcam shaft |22. -A -pin |41 is provided -on the :outer-end .of the .crank arm 51338,

its Withdrawal. Theihub fof thearm |52 .-issecured 1to ashaft |56 by..asetscrew, -not shown; y

and theganm-ISZ Will bemoved by theshaft |56. Shaft :I 56 .is.-rotatably supported by a -.U -shaped bracket |51 `which issecured tothe .frame -I=2I], .-as byboltseandnuts |155. .Alhandle .|58 isprovidedf onrthe end of the-shaft |56 toltacil-itate rotation ofthatshaft.`Aspring .Ifis secured to the huh of.-ar.m |52 `and totheU-shapedhracketInland .thatsprng tends to rotate the `handle :|58 .into the onposition. This spring assists the spring,r

not shown, .adjacent Tcam shaft A|22 .in rotating shaft |22 to valveclosingfposition. VA Tstoptpin arm to limitrotation of the crank arm y.I52.

With athis ,.modii-led construction, it .,-is possible to atta-in eitheri-u'll .or partial manual Aoperation of the valve. n is desired,theslozt :|46 Will-be rir-:leseopcd over .the pin .I4 I.; `Mld`.Tvs/here .full-'manualoperation -is desined,gtheopeningMswillbe\telescoped:-over pin |41. vInfeitlier-case,.-har idle 45t-can.be-rotated toiopenihe valve, and thefsolenoid inthe housingIrcan-.closenoropen:the valve. Byproviding the f opening'.|.44.;and;^,the slot -I46sin the :connecting rod I-r42,.tneipresentintent" yirrialies Ait :possible toibuildagstandafrdfuntiwhic @aubensedintwo diierentways ...merelsv by s. .11g Athe Vro d;.`|1 relative tolthe pin |4I. Of course, where-desired; either :the slot-M6 for the'opening Ill-'i can be omitted.

ent invent/ioniias .iheenzs'hownand:described v.the drawing and.accompanying edescriptionA ,it

vanious'ohanges .may-.he Inadeginfthegfeormsof the .l

inventionftwithout ,affecting the :scope thereof Whatzclaim :1. AAY.fluid fcontrollins iden/.ice that 'comprises fa. housing, .an .in-letandan out'lett'or said-1-housing Y a value seat. intermediate said.inlet andzoulefl. la

valve @element ahat .fis .movable :toward ;-a11.d away said stem andmove fsaid fstem .fawaycromisaid seat,-ano'ther Aof said .cams having :atripping' portion Vifor engaging ysaid stem, ia #lost-motionconnectionhetween said cams vwhereby .said #trip- Where .partial manual.operation *l ing, afstem andghai pmseledvely-.ts mato .anopeingq 4-417.5 .ping'acammanhe movedfrelative ftofsaid Blocking.

cani to place said tripping portion of 'said tripping cam in engagementwith the stem and raise the stem out of engagement with said lockingcam, a rotatable shaft upon which said cams are mounted, said shaftbeing xed relative to saidV housing but being rotatable to move saidtripping cam, a lost-motion connection between said tripping cam andsaid shaft, a manually operable handle to rotate said shaft, and anelectromagnetic element to cause selective movement of said stem, saidstem selectively engaging said locking portion of the said one cam tohold the said one cam in open valve position and being selectivelymovable out of engagement with said locking portion by said tripping camor by said electromagnetic element to free the said one cam for movementto closed valve position, said manually operable handle acting as anindicator, said handle being movable to rotate said shaft and move saidtripping cam until the lost-motio-n connection between said camsinitially forces the actuating portion of said locking cam to engagesaid stem and move said valve element away from said seat andsecondarily forces said locking portion of said locking cam intoengagement with said stem to hold said valve element away from saidseat, said electromagnetic element being energizable to move said stemout of engagement with said locking cam and thereby free said lockingcam and said shaft for movement.

2. A fluid controlling device that comprises a housing, an inlet and anoutlet for said housing, a valve seat intermediate said inlet andoutlet, a valve element that is movable toward and away from said valveseat to prevent and permit flow of fluids through said housing, a pairof cams, one of said cams being adapted to move said valve element awayYfrom said valve seat andto hold said valve element away from said valveseat, a resilient element biasing said one cam to closed valve position,another` of said cams being adapted to free said valve element from saidone cam and thus permit said one cam and said valve element to move toclosed position, a lostmotion connection between said cams, a rotatableshaft upon which said cams are mounted, said shaft being xed relative tosaid housingyand a lost-motion connectio-n between said shaft and saidother cam. v

3. A fluid controlling device that comprises a housing, a valve seat insaid housing, a valve element that is within said housing and is movabletoward and away from said valve seat to prevent and permit flow ofiluids through said housing, said valve element being biased toward saidvalve seat, a cam, a support for said cam that is xed relative to saidhousing and that holds said cam adjacent said valve element. said cambeing movable to engage said valve element and hold it away from saidvalve seat, said cam being biased out of engagement with said valveelement, a second cam that is adjacent said iirst cam and is selectivelymovable to free said first cam from said valve element and permit saidvalve element to move .toward said valve seat, a 10st-motion connectionbetween said cams, an actuator that moves said second cam directly andmoves said rst cam through said lostmotion connection between said cams,and an electromagnetic element, said valve element selectively engagingthe rst said cam to hold said iirst cam against movement, saidelectromagnetic element and said second cam selectively acting uponsaidvalve element to disengage that element 'from 'said rst camV and'permit' said valve element to move toward said valve seat.

4. A fluid controlling device that comprises a valve housing, a valveseat within said housing, a valve element within said housing that ismovable toward and away from said valve seat to selectively prevent orpermit flow of uids past said valve seat, a manually operable actuatingmechanism that can y move said valve element away from said valve seatand that hasa locking portion thereon to selectively hold said valveelement away from said valve seat, said mechanically operable actuatingmechanism being biased away from said Valve element, an electricallyoperable mechanism that can move said valve element away from said valveseat, said valve element having a stem that isrselectively acted upon bysaid manually operable and said electrically operable mechanisms to movesaid valve element adapted to free said mechanically operable e Ymechanism for movement away from said valve element.

5. A fluid controlling device that comprises a housing, an inlet and anoutlet forv said housing,

a valve seat intermediate said inlet and outlet,Y

a valve element within said housing that is mov.- able toward and awayfrom said valve seat to selectively prevent or permit flow of fluidsthrough said housing, a cam, an actuator for said cam, a support that isiixed relative to said housing and that holds said cam in register with,and for rotation relative to, said valve element, said cam beingrotatable to move said valve element relative to said valve seat andbeing adapted to releasably hold said valve element away from said valveseat, a resilient element biasing said cam to closed position, atripping cam adjacent said first cam that is actuable to move said ValveY element and free said rst cam for movement t0 closed position of saidvalve element, and an electromagnetic winding that is energizableto movesaid valve element and release said valve element from said first camand free said rst cam for movement to closed position of said valveelement, said valve element selectively holding said rst cam againstmovement until said valve element is moved by said tripping cam or bysaid electromagnetic winding.

6. A fluid controlling device which comprises a valve housing thatcontains a valve seat, a valve element that is movable toward and awayfrom said valve seat to prevent and permit flow of fluid past said seat,a stem securedto and movable with said valve element, said stem beingconfined for axial reciprocatingl movement, a

cam, a support for said cam that is iixed rela- Y tive to said housingand that holds said cam adjacent said stem, said cam being movable t0engage rotatably said stem and thereby move said valve element relativeto said valve seat and tov releasably engage said stem and therebyreleasably hold said valve element away from said seat, a resilientelement biasingY said cam to valve closing position, said valve stemselectively holding said cam against movement to valve closing position,a manually-operable tripping element selectively engageable `with saidstem to free said cam from' said stem, `'said tripping element bei-ngmovable y.outrof engagement Ywithpsaid stem whenever said cam moves to.valve lclosing position, and .an electromagnetic winding energizable tocause movement of said stem, said tripping .element .and zsaidelectromagnetic winding being selectively opera-ble -fto cause fmovementof said stem and thereby permit rotation of said cam movement of saidvalve element,1said tripping element beingrnoved outof engagement with'said 'stem when said yelectron'iagnetijc "winding frees-said camfor-rotation.

"7. 'A 'fluid controlling device which comprises a valve housingthat-contains a valve seat, a valve element that -ismovable toward andIaway from said yvalve seat to" prevent Band permit flow of fluid 'past-said seat, a a 1support -for 'said cam that is rfixed relative to `saidhousing V"and that holds Fsaid cam adjacent 'said valve element, saidcam being to `move said `valve element irelative to said valve Aseat-andto releasably vhold said valve element 'away `from '-said'seat, laresilient element biasing Vsaid 'cam to -valve closing position, saidvalvestexnselectively holdingsaid cam against movement to valve vclosingposition, a Kmanually-operable tripping kelement 'to `free said cam formovement to valve closing position, said tripping element being movableout of tripping position whenever said cam moves to valve closingposition, and an electromagnetic winding, said tripping element and saidelectromagnetic winding being selectively operable to act upon saidvalve element and permit rotation of said cam and movement of said valveelement, said manually operable tripping element being spaced from saidvalve housing but being connected to said valve element by a flexiblecable, said tripping element being movable out of tripping position whensaid electromagnetic winding permits rotation of said cam.

8. A fluid controlling device that comprises a housing, an inlet and anoutlet for said housing, a valve seat intermediate said inlet andoutlet, a valve element that is movable toward and away from said valveseat to prevent and permit flow of fluids through said housing, a pairof cams, one of said cams being adapted to move said valve element awayfrom said valve seat and to hold said valve element away from said valveseat, a resilient element biasing said one cam to closed valve position,another of said cams being adapted to free said valve element from saidone cam and thus permit said one cam and said valve element to move toclosed position, a lost-motion connection between said cams, a rotatableshaft upon which said cams are mounted, said shaft being fixed relativeto said housing but being rotatable to move said freeing cam, and alost-motion connection between said shaft and said other cam, and aremotely located actuator which is movable in response to movement ofsaid shaft.

9. In a control device which has a valve seat, a valve element movablerelative to said valve seat, an actuator that is adapted to move saidvalve element, a second actuator that is adapted to free said firstactuator from said valve element, a support that is fixed relative tosaid seat and that holds said actuators in register with said valveelement and permits said actuators to move relative to said valveelement, and a handle, the improvement which comprises a lost-motionconnection between said handle and said actuator, and a lost-motionconnection between said actuators.

10. In a control device which has a valve seat,

a valve 'elementinimitabile reletivei'to salido/'alize' seat,azpluralityiof actuatorsy that are adaptedao move 'said .valve element,a :'.shaft that ris iri'ixed relative to tsaidxfseat :and isvmovableato; move Asaid actuators and athereby :move saidzvalvefelemeiit,

' and f-a handle movableto von p'ositionizaind vietf Vvalve element, and:a :handle movable :to `on position r fand off position, itheimprovement.

which :comprises Aa remotely positioned ihand'le, ;a exibleicab'leextending Yb'etweenisaid yhandle tand said actuator, and :a resilientelement fthatbiases :said handle tofo "position, 'and astop that freessaidlhandle 'from the action-olf said resilient fel'ement at a point.adjacent 'the oi rposition.

1-2. A fluid I.controlling device .that lcomprises fa housing, van inletvand lan `outlet y'for isaidihonsmg a valve seatintermediate fsaid inlet.and outlet,

a valve element within said housing that is movable toward and away fromsaid valve seat to selectively prevent or permit flow of fluid throughsaid housing, a pair of cams, a shaft that is fixed relative to saidhousing, said cams being mounted on said shaft for rotation about theaxis of said shaft, one of said cams being adapted to rotate and movesaid valve element away from said valve seat and to hold said valveelement away from said valve seat, a resilient element biasing said onecam for rotation to closed valve position, the other of said cams beingadapted to rotate to free said valve element from said one cam and thuspermit said one cam and said valve element to move to closed position,and an actuator to rotate said cams and selectively cause movement ofsaid valve element toward and away from said seat.

13. A fluid controlling device that comprises a housing, an inlet and anoutlet for said housing, a valve seat intermediate said inlet andoutlet, a valve element within said housing that is movable toward andaway from said valve seat to selectively prevent or permit iiow of iiuidthrough said housing, a pair of cams, a shaft that is xed relative tosaid housing, said cams being mounted on said shaft for rotation aboutthe axis of said shaft, one of said cams being adapted to rotate andmove said valve element away from said valve seat and to hold said valveelement away from said valve seat, a resilient element biasing said onecam for rotation to closed valve position, the other of said cams beingadapted to rotate to free said valve element from said one cam and thuspermit said one camand said valve element to move to closed valveposition, an actuator to rotate said cams and selectively cause movementof said valve element toward and away from said seat, said actuatorbeing a handle that is rotatably mounted, and a mechanical connectionextending between said handle and said shaft to transmit rotative motionfrom said handle to said shaft and cams.

14. In a control device which has a valve seat, a valve element movablerelative to said valve seat to prevent or permit iiuid flow past saidseat, an actuator that is adapted to move said valve element, a handle,said handle being movable from on position to off position, and alost-motion connection between said handle and said actuator, theimprovement which comprises a spring said lost-motion connection somovement of said actuator to closed valve position will cause saidlost-motion connection to impart a force to said handle that will movesaid handle to off position, whereby said handle indicates the conditionof said control device.

15. A iiuid controlling device that comprises a valve housing, a valveseat within said housing, a valve element that is movable toward andaway from said valve seat to selectively prevent or permit flow of uidspast said valve seat, a manually operable actuating cam that can movesaid valve element away from said valve seat but is biased formovementaway from said valve element ,a tripping cam adjacent said manuallyoperable actuating cam, a shaft supporting each of said cams,` said camsbeing rotatable about the axis of said shaft,'said tripping cam beingselectively movable to free said manually operable actuating cam fromsaid valve element, and an electrically operable mechanism that can movesaid valvei element away from said valve seat and can free said manuallyoperable actuating cam from' said valve element.

LAWRENCE M. PERSONS.

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